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V-22555

CAT II (Medium)

If the system is using LDAP for authentication or account information, the system must use a TLS connection using FIPS 140-2 approved cryptographic algorithms.

Rule ID

SV-45996r1_rule

STIG

SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide

Version

V1R12

CCIs

CCI-001453

Discussion

LDAP can be used to provide user authentication and account information, which are vital to system security. Communication between an LDAP server and a host using LDAP requires protection.

Check Content

Check if the system is using NSS LDAP. 
# grep -v '^#' /etc/nsswitch.conf | grep ldap
If no lines are returned, this vulnerability is not applicable.
Check if NSS LDAP is using TLS.
# grep '^ssl start_tls' /etc/ldap.conf
If no lines are returned, this is a finding.
Check if NSS LDAP TLS is using only FIPS 140-2 approved cryptographic algorithms.
# grep '^tls_ciphers' /etc/ldap.conf
If the line is not present, or contains ciphers not approved by FIPS 140-2, this is a finding.

Fix Text

Edit "/etc/ldap.conf" and add a "ssl start_tls" and "tls_ciphers" options with only FIPS 140-2 approved ciphers.